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Previous issue date: 2015-01-09 / Carcinogenesis is a complex multifactorial process dependent on inherent to individual or environmental factors. Environmental polycyclic aromatic hydrocarbons (PAHs) have been pointed as a risk factor for different types of cancer, especially in upper aerodigestive tract. Chimarr?o is a hot mat? beverage containing PAHs that are incorporated to the herb during drying process of the leaves. Individuals that drink chimarr?o are exposed do PAHs, which can be assessed by 1-hydroxypyrene-glucuronide levels (1-OHPG). The aim of the present study was to evaluate cytomorphometric alterations of oral mucosa epithelium in chimarr?o drinkers correlating them to salivary and urinary levels of 1-OHPG. Adult males and females without history of regular alcohol use were allocated into 4 groups: (1)=39 chimarr?o drinkers who did not smoke; (2)=25 chimarr?o drinkers who smoked; (3)=27 smokers who did not drink chimarr?o; and (4)=27 individuals who had neither of these habits. Mucosal scrapings were performed and subjected to qualitative (Papanicolaou) and quantitative (nuclear area, cytoplasmic area, nucleus/cytoplasm ratio) analysis. Urine and saliva samples were assayed for 1-OHPG by high-performance liquid chromatography (HPLC). All samples were classified into Papanicolaou class I. Nuclear and cytoplasmic areas of epithelial cells in soft palate smears did not significantly differ between the groups, whereas in buccal (cheek) mucosa they were significantly greater in the chimarr?o group than in controls. The nucleus/cytoplasm ratio as well as salivary and urinary concentrations of 1-OHPG did not significantly differ. Urinary and salivary 1-OHPG concentrations were positively correlated to each other but they did not show any correlation with the cytometric variables. Nuclear and cytoplasmic areas were positively correlated to each other in either palate or buccal mucosa smears. Conclusion : Chimarr?o was associated with neither cytomorphometric alterations in epithelial cells of palate smears nor urinary and salivary 1-OHPG levels. Buccal smears showed higher nuclear and cytoplasmic area in the chimarr?o group, but this result does not support an association with dysplasia. / A carcinog?nese ? um processo complexo e multifatorial dependente de fatores que s?o inerentes ao indiv?duo ou ambientais. A presen?a de hidrocarbonetos arom?ticos polic?clicos (HAPs) no meio ambiente tem sido apontada como um dos fatores de risco para o desenvolvimento de diferentes tipos de c?ncer, principalmente do trato aerodigestivo superior. O chimarr?o ? uma bebida quente ? base de erva-mate que concentra HAPs incorporados ? erva durante o processamento de secagem das folhas. Indiv?duos com o h?bito de tomar chimarr?o est?o expostos aos HAPs, exposi??o esta que pode ser mensurada por meio da quantifica??o de 1-hidroxipireno glucoron?deo (1-OHPG). O presente estudo teve por objetivo investigar altera??es citomorfom?tricas do epit?lio da mucosa oral em tomadores de chimarr?o e correlacion?-las com os n?veis salivares e urin?rios de 1-OHPG. Indiv?duos adultos, de ambos os sexos e sem hist?ria de uso regular de ?lcool, foram distribu?dos em quatro grupos: (1)=39 indiv?duos tomadores de chimarr?o, n?o-fumantes; (2)=25 fumantes tomadores de chimarr?o, (3)=27 indiv?duos fumantes n?o tomadores de chimarr?o e (4)=27 indiv?duos sem nenhum dos h?bitos supracitados (grupo?controle). Amostras de citologia exfoliativa foram obtidas da mucosa do palato mole e mucosa jugal para avalia??o qualitativa (Papanicolaou) e quantitativa (?rea nuclear, ?rea citoplasm?tica e propor??o n?cleo/citoplasma). Amostras de saliva e urina foram coletadas para dosagem de 1-OHPG por meio de cromatografia l?quida de alta performance (HPLC). Os resultados evidenciaram todas as amostras citol?gicas classificadas como classe I de Papanicolaou. As ?reas nuclear e citoplasm?tica das c?lulas epiteliais do palato, bem como a propor??o n?cleo/citoplasma de ambos os s?tios n?o diferiram significativamente entre os grupos. No grupo chimarr?o, as c?lulas epiteliais da mucosa jugal exibiram ?rea nuclear e ?rea citoplasm?tica significativamente maiores que o grupo-controle. Foi observada correla??o positiva entre ?rea nuclear e citoplasm?tica, bem como entre concentra??es salivares e urin?rias de 1-OHPG. Conclus?o : N?o foi observada associa??o do chimarr?o com altera??es citomorfom?tricas das c?lulas epiteliais do palato, ou com os n?veis salivares e urin?rios de 1-OHPG. Embora ?rea nuclear e citoplasm?tica tenham sido significativamente maiores no grupo chimarr?o do que no controle, o presente estudo n?o permite inferir que essas altera??es tenham tend?ncia displ?sica.
| Identifer | oai:union.ndltd.org:IBICT/oai:tede2.pucrs.br:tede/5985 |
| Date | 09 January 2015 |
| Creators | C?ndido, Lisiane |
| Contributors | Cherubini, Karen |
| Publisher | Pontif?cia Universidade Cat?lica do Rio Grande do Sul, Programa de P?s-Gradua??o em Odontologia, PUCRS, Brasil, Faculdade de Odontologia |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da PUC_RS, instname:Pontifícia Universidade Católica do Rio Grande do Sul, instacron:PUC_RS |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | -8096554818733665164, 600, 600, 600, 4673435736271820140, -2070498469879244349 |
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